<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>移动端适配-rem方案-demo</title>

    <style>
      .box {
        width: 5rem;
        height: 5rem;
        background-color: pink;
      }
    </style>
  </head>
  <body>
    <div class="box"></div>

    <script src="./my_flexible.js"></script>
  </body>
</html>
